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Title: Array - JavaScript | MDN

Open Graph Title: Array - JavaScript | MDN

Description: The Array object, as with arrays in other programming languages, enables storing a collection of multiple items under a single variable name, and has members for performing common array operations.

Open Graph Description: The Array object, as with arrays in other programming languages, enables storing a collection of multiple items under a single variable name, and has members for performing common array operations.

Opengraph URL: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array

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Standard built-in objectshttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects
Arrayhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array
https://github.com/orgs/mdn/discussions/739
https://developer.mozilla.org/de/docs/Web/JavaScript/Reference/Global_Objects/Array
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array
https://developer.mozilla.org/es/docs/Web/JavaScript/Reference/Global_Objects/Array
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Learn more https://developer.mozilla.org/en-US/docs/Glossary/Baseline/Compatibility
See full compatibility https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#browser_compatibility
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storing a collection of multiple items under a single variable namehttps://developer.mozilla.org/en-US/docs/Learn_web_development/Core/Scripting/Arrays
performing common array operationshttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#examples
Descriptionhttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#description
Constructorhttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#constructor
Static propertieshttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#static_properties
Static methodshttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#static_methods
Instance propertieshttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#instance_properties
Instance methodshttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#instance_methods
Exampleshttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#examples
Specificationshttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#specifications
Browser compatibilityhttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#browser_compatibility
See alsohttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#see_also
Descriptionhttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#description
primitiveshttps://developer.mozilla.org/en-US/docs/Glossary/Primitive
data typeshttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Data_structures
typed arrayshttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Typed_arrays
zero-indexedhttps://en.wikipedia.org/wiki/Zero-based_numbering
lengthhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/length
array-copy operationshttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#copy_an_array
shallow copieshttps://developer.mozilla.org/en-US/docs/Glossary/Shallow_copy
deep copieshttps://developer.mozilla.org/en-US/docs/Glossary/Deep_copy
Array indiceshttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#array_indices
associative arrayhttps://en.wikipedia.org/wiki/Associative_array
object property collectionhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Data_structures#properties
traversal and mutation operationshttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Indexed_collections#array_methods
bracket notationhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Working_with_objects#objects_and_properties
dot notationhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Property_accessors
Relationship between length and numerical propertieshttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#relationship_between_length_and_numerical_properties
lengthhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/length
join()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/join
slice()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/slice
indexOf()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/indexOf
lengthhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/length
push()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/push
splice()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/splice
lengthhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/length
lengthhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/length
lengthhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/length
lengthhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/length
lengthhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/length
Array methods and empty slotshttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#array_methods_and_empty_slots
sparse arrayshttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Indexed_collections#sparse_arrays
concat()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/concat
copyWithin()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/copyWithin
every()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/every
filter()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/filter
flat()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/flat
flatMap()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/flatMap
forEach()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/forEach
indexOf()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/indexOf
lastIndexOf()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/lastIndexOf
map()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/map
reduce()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/reduce
reduceRight()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/reduceRight
reverse()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/reverse
slice()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/slice
some()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/some
sort()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/sort
splice()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/splice
entries()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/entries
fill()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/fill
find()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/find
findIndex()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/findIndex
findLast()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/findLast
findLastIndex()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/findLastIndex
includes()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/includes
join()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/join
keys()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/keys
toLocaleString()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/toLocaleString
toReversed()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/toReversed
toSorted()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/toSorted
toSpliced()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/toSpliced
values()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/values
with()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/with
Copying methods and mutating methodshttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#copying_methods_and_mutating_methods
shallowlyhttps://developer.mozilla.org/en-US/docs/Glossary/Shallow_copy
Stringhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String
Numberhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number
Booleanhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Boolean
this.constructor[Symbol.species]https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/Symbol.species
concat()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/concat
filter()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/filter
flat()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/flat
flatMap()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/flatMap
map()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/map
slice()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/slice
splice()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/splice
toReversed()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/toReversed
toSorted()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/toSorted
toSpliced()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/toSpliced
with()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/with
copyWithin()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/copyWithin
fill()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/fill
pop()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/pop
slice(0, -1)https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/slice
push(v1, v2)https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/push
concat([v1, v2])https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/concat
reverse()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/reverse
toReversed()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/toReversed
shift()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/shift
slice(1)https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/slice
sort()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/sort
toSorted()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/toSorted
splice()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/splice
toSpliced()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/toSpliced
unshift(v1, v2)https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/unshift
toSpliced(0, 0, v1, v2)https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/toSpliced
spread syntaxhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Spread_syntax
slice()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/slice
Iterative methodshttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#iterative_methods
elementhttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#element
indexhttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#index
arrayhttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#array
the usual ruleshttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/this
non-stricthttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Strict_mode#no_this_substitution
globalThishttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/globalThis
arrow functionhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions/Arrow_functions
bindinghttps://developer.mozilla.org/en-US/docs/Glossary/Binding
mutating initial array in iterative methodshttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#mutating_initial_array_in_iterative_methods
copyinghttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#copying_methods_and_mutating_methods
generichttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#generic_array_methods
empty slotshttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#array_methods_and_empty_slots
every()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/every
filter()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/filter
find()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/find
findIndex()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/findIndex
findLast()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/findLast
findLastIndex()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/findLastIndex
flatMap()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/flatMap
forEach()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/forEach
map()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/map
some()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/some
every()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/every
find()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/find
findIndex()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/findIndex
findLast()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/findLast
findLastIndex()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/findLastIndex
some()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/some
reduce()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/reduce
reduceRight()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/reduceRight
sort()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/sort
mutating initial array in iterative methodshttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#mutating_initial_array_in_iterative_methods
Generic array methodshttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#generic_array_methods
converted to an integerhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number#integer_conversion
unsafe integerhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/MAX_SAFE_INTEGER
TypeErrorhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/TypeError
lengthhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/length
array-like objecthttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Indexed_collections#working_with_array-like_objects
sparse arrayhttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#array_methods_and_empty_slots
NodeListhttps://developer.mozilla.org/en-US/docs/Web/API/NodeList
HTMLCollectionhttps://developer.mozilla.org/en-US/docs/Web/API/HTMLCollection
argumentshttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions/arguments
Constructorhttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#constructor
Array()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/Array
Static propertieshttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#static_properties
Array[Symbol.species]https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/Symbol.species
Static methodshttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#static_methods
Array.from()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/from
Array.fromAsync()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/fromAsync
Array.isArray()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/isArray
Array.of()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/of
Instance propertieshttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#instance_properties
Array.prototype.constructorhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/constructor
Arrayhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/Array
Array.prototype[Symbol.unscopables]https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/Symbol.unscopables
withhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/with
lengthhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/length
Instance methodshttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#instance_methods
Array.prototype.at()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/at
Array.prototype.concat()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/concat
Array.prototype.copyWithin()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/copyWithin
Array.prototype.entries()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/entries
array iteratorhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Iterators_and_generators
Array.prototype.every()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/every
Array.prototype.fill()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/fill
Array.prototype.filter()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/filter
Array.prototype.find()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/find
Array.prototype.findIndex()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/findIndex
Array.prototype.findLast()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/findLast
Array.prototype.findLastIndex()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/findLastIndex
Array.prototype.flat()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/flat
Array.prototype.flatMap()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/flatMap
Array.prototype.forEach()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/forEach
Array.prototype.includes()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/includes
Array.prototype.indexOf()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/indexOf
Array.prototype.join()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/join
Array.prototype.keys()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/keys
array iteratorhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Iterators_and_generators
Array.prototype.lastIndexOf()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/lastIndexOf
Array.prototype.map()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/map
Array.prototype.pop()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/pop
Array.prototype.push()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/push
Array.prototype.reduce()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/reduce
Array.prototype.reduceRight()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/reduceRight
Array.prototype.reverse()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/reverse
Array.prototype.shift()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/shift
Array.prototype.slice()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/slice
Array.prototype.some()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/some
Array.prototype.sort()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/sort
Array.prototype.splice()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/splice
Array.prototype.toLocaleString()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/toLocaleString
Object.prototype.toLocaleString()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/toLocaleString
Array.prototype.toReversed()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/toReversed
Array.prototype.toSorted()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/toSorted
Array.prototype.toSpliced()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/toSpliced
Array.prototype.toString()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/toString
Object.prototype.toString()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/toString
Array.prototype.unshift()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/unshift
Array.prototype.values()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/values
array iteratorhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Iterators_and_generators
Array.prototype.with()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/with
Array.prototype[Symbol.iterator]()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/Symbol.iterator
values()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/values
Exampleshttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#examples
JavaScript First Steps: Arrayshttps://developer.mozilla.org/en-US/docs/Learn_web_development/Core/Scripting/Arrays
explains what arrays arehttps://developer.mozilla.org/en-US/docs/Learn_web_development/Core/Scripting/Arrays#what_is_an_array
Create an arrayhttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#create_an_array
array literal notationhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/Array#array_literal_notation
Array()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/Array
String.prototype.split()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/split
Create a string from an arrayhttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#create_a_string_from_an_array
join()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/join
Access an array item by its indexhttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#access_an_array_item_by_its_index
Find the index of an item in an arrayhttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#find_the_index_of_an_item_in_an_array
indexOf()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/indexOf
Check if an array contains a certain itemhttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#check_if_an_array_contains_a_certain_item
includes()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/includes
indexOf()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/indexOf
Append an item to an arrayhttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#append_an_item_to_an_array
push()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/push
Remove the last item from an arrayhttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#remove_the_last_item_from_an_array
pop()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/pop
Remove multiple items from the end of an arrayhttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#remove_multiple_items_from_the_end_of_an_array
splice()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/splice
Truncate an array down to just its first N itemshttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#truncate_an_array_down_to_just_its_first_n_items
splice()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/splice
Remove the first item from an arrayhttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#remove_the_first_item_from_an_array
shift()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/shift
Remove multiple items from the beginning of an arrayhttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#remove_multiple_items_from_the_beginning_of_an_array
splice()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/splice
Add a new first item to an arrayhttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#add_a_new_first_item_to_an_array
unshift()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/unshift
Remove a single item by indexhttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#remove_a_single_item_by_index
splice()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/splice
Remove multiple items by indexhttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#remove_multiple_items_by_index
splice()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/splice
Replace multiple items in an arrayhttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#replace_multiple_items_in_an_array
splice()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/splice
Iterate over an arrayhttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#iterate_over_an_array
for...ofhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/for...of
Loops and iterationhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Loops_and_iteration
every()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/every
filter()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/filter
flatMap()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/flatMap
map()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/map
reduce()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/reduce
reduceRight()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/reduceRight
forEach()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/forEach
Call a function on each element in an arrayhttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#call_a_function_on_each_element_in_an_array
forEach()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/forEach
Merge multiple arrays togetherhttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#merge_multiple_arrays_together
concat()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/concat
Copy an arrayhttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#copy_an_array
spread syntaxhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Spread_syntax
from()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/from
slice()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/slice
spread syntaxhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Spread_syntax
Array.from()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/from
Array.prototype.slice()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/slice
Array.prototype.concat()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/concat
shallow copieshttps://developer.mozilla.org/en-US/docs/Glossary/Shallow_copy
deep copyhttps://developer.mozilla.org/en-US/docs/Glossary/Deep_copy
JSON.stringify()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/JSON/stringify
JSON.parse()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/JSON/parse
structuredClone()https://developer.mozilla.org/en-US/docs/Web/API/Window/structuredClone
transferable objectshttps://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API/Transferable_objects
strictly equivalenthttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Equality_comparisons_and_sameness#strict_equality_using
Creating a two-dimensional arrayhttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#creating_a_two-dimensional_array
Using an array to tabulate a set of valueshttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#using_an_array_to_tabulate_a_set_of_values
Creating an array using the result of a matchhttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#creating_an_array_using_the_result_of_a_match
RegExphttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp
RegExp.prototype.exec()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp/exec
String.prototype.match()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/match
RegExp.prototype.exec()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp/exec
String.prototype.match()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/match
Mutating initial array in iterative methodshttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#mutating_initial_array_in_iterative_methods
Iterative methodshttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#iterative_methods
array methods and empty slotshttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#array_methods_and_empty_slots
Specificationshttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#specifications
ECMAScript® 2026 Language Specification# sec-array-objectshttps://tc39.es/ecma262/multipage/indexed-collections.html#sec-array-objects
Browser compatibilityhttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#browser_compatibility
See alsohttps://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array#see_also
Indexed collectionshttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Indexed_collections
TypedArrayhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/TypedArray
ArrayBufferhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer
Learn how to contributehttps://developer.mozilla.org/en-US/docs/MDN/Community/Getting_started
MDN contributorshttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/contributors.txt
View this page on GitHubhttps://github.com/mdn/content/blob/main/files/en-us/web/javascript/reference/global_objects/array/index.md?plain=1
Report a problem with this contenthttps://github.com/mdn/content/issues/new?template=page-report.yml&mdn-url=https%3A%2F%2Fdeveloper.mozilla.org%2Fen-US%2Fdocs%2FWeb%2FJavaScript%2FReference%2FGlobal_Objects%2FArray&metadata=%3C%21--+Do+not+make+changes+below+this+line+--%3E%0A%3Cdetails%3E%0A%3Csummary%3EPage+report+details%3C%2Fsummary%3E%0A%0A*+Folder%3A+%60en-us%2Fweb%2Fjavascript%2Freference%2Fglobal_objects%2Farray%60%0A*+MDN+URL%3A+https%3A%2F%2Fdeveloper.mozilla.org%2Fen-US%2Fdocs%2FWeb%2FJavaScript%2FReference%2FGlobal_Objects%2FArray%0A*+GitHub+URL%3A+https%3A%2F%2Fgithub.com%2Fmdn%2Fcontent%2Fblob%2Fmain%2Ffiles%2Fen-us%2Fweb%2Fjavascript%2Freference%2Fglobal_objects%2Farray%2Findex.md%0A*+Last+commit%3A+https%3A%2F%2Fgithub.com%2Fmdn%2Fcontent%2Fcommit%2F4bfeb5a89c1528da7cb7847a9ccb93f9b00290f0%0A*+Document+last+modified%3A+2025-09-28T04%3A52%3A55.000Z%0A%0A%3C%2Fdetails%3E
Standard built-in objectshttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects
Arrayhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array
Array()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/Array
from()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/from
fromAsync()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/fromAsync
isArray()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/isArray
of()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/of
[Symbol.species]https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/Symbol.species
at()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/at
concat()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/concat
copyWithin()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/copyWithin
entries()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/entries
every()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/every
fill()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/fill
filter()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/filter
find()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/find
findIndex()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/findIndex
findLast()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/findLast
findLastIndex()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/findLastIndex
flat()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/flat
flatMap()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/flatMap
forEach()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/forEach
includes()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/includes
indexOf()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/indexOf
join()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/join
keys()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/keys
lastIndexOf()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/lastIndexOf
map()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/map
pop()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/pop
push()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/push
reduce()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/reduce
reduceRight()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/reduceRight
reverse()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/reverse
shift()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/shift
slice()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/slice
some()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/some
sort()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/sort
splice()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/splice
toLocaleString()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/toLocaleString
toReversed()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/toReversed
toSorted()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/toSorted
toSpliced()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/toSpliced
toString()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/toString
unshift()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/unshift
values()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/values
with()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/with
[Symbol.iterator]()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/Symbol.iterator
lengthhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/length
[Symbol.unscopables]https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/Symbol.unscopables
Object/Functionhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object
apply()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/apply
bind()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/bind
call()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/call
toString()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/toString
[Symbol.hasInstance]()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/Symbol.hasInstance
displayNamehttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/displayName
lengthhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/length
namehttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/name
prototypehttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/prototype
argumentshttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/arguments
callerhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/caller
__defineGetter__()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/__defineGetter__
__defineSetter__()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/__defineSetter__
__lookupGetter__()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/__lookupGetter__
__lookupSetter__()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/__lookupSetter__
hasOwnProperty()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/hasOwnProperty
isPrototypeOf()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/isPrototypeOf
propertyIsEnumerable()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/propertyIsEnumerable
toLocaleString()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/toLocaleString
toString()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/toString
valueOf()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/valueOf
__proto__https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/proto
constructorhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/constructor
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Website Privacy Noticehttps://www.mozilla.org/privacy/websites/
Telemetry Settingshttps://www.mozilla.org/en-US/privacy/websites/data-preferences/
Legalhttps://www.mozilla.org/about/legal/terms/mozilla
Community Participation Guidelineshttps://www.mozilla.org/about/governance/policies/participation/
Mozilla Corporation’shttps://www.mozilla.org/
Mozilla Foundationhttps://foundation.mozilla.org/
a Creative Commons licensehttps://developer.mozilla.org/docs/MDN/Writing_guidelines/Attrib_copyright_license

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URLs of crawlers that visited me.